Concrete-block machine.



J. CATHRINBR.

CONCRETE BLOCK MACHINE.

APPLIOATION FILED MAR. 11, 1912.

1,086,994. Patented Feb. 10,1914.

J. CATHRINER.

CONCRETE BLOCK MACHINE.

APPLICATION FILED MAR. 11I 1912.

Patented Feb. 10, 1914.

a SHEETS-SHEET 2.

' 5114:0014 To z Jfla f/y/wier COLUMBIA WRAP" CO-IWASHINGTON. D. c.

J. GATHHINBR.

CONCRETE BLOCK MACHINE.

APPLICATION rum) MAR. 11, 1912.

3 SHEETS-SHEET 3.

an-uem o a Patented Feb. 10, 1914.

UNITED STATES FATENT @FFIQE.

JOSEPH CATHRINER, OF BRENHAM, TEXAS, ASSIGNOR OF ONE-HALF TO OTTO ERNES BAUMGAR'I, OF BRENHAIH, TEXAS.

CONCRETE-BLOCK MACHINE.

Specification of Letters Patent.

ma a Feb. to, rare.

Application filed. March 11, 1912. Serial No. 682,852.

T 0 all whom it may concern:

Be it known that I, Josnrri CATHRINER, a citizen of the United States, residing at Brenham, in the county of lVashington and State of Texas, have invented certain new and useful Improvements in Concrete-Block Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in means for forming cement or concrete blocks.

One object of the invention is to provide a machine of this character having an improved means for operating the block holding or forming mechanism whereby the blocks may be quickly and perfectly formed.

A further object is to provide a concrete block machine which is particularly adapt ed for forming curved or segmental blocks to be employed in the construction. of well curbing, silos and other circular structures.

With these and other objects in view the invention consists of certain novel features of construction, and the combination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings; Figure l is a side view of my improved concrete Fig. 1; Fig. 3 is a vertical longitudinal section with the mold in lowered or operative position; Fig. 4: is a vertical sectional view taken at right angles to Fig. 3 and showing the mold in lowered position; Fig. 5 is a horizontal sectional view on the line 55 of Fig. 2; Fig. 6 is a detail perspective view of the mold for the blocks; Fig. 7 is a plan view of one of the pallet boards.

My improved block machine comprises a supporting frame consisting of pairs of side bars 1, connected at their upper ends by cross bars 2 and secured at their lower ends to base bars 3 which in turn are secured to sills 1 as shown. The pairs of side bars 1 are connected near their upper ends by transverse bars 5 and by tie rods 6. The upper and lower cross bars 2 and 3 are connected by vertical tie rods 7 while the bars 1 of each side of the frame are connected by tie rods 8.

Secured between the bars 1 near the lower end of the frame is a mold supporting platform 90 carried by frame beams 9. and on which is adapted to be placed the pallets 10 of the mold. Slidably supported on the platform is a mold operating mechanism comprising a cross head 11 to the ends of which are secured the lower ends of mold operating rods 12 whose upper ends .are suitably connected to the mold 13, said mold being shown as of segmental form and having secured to its sides apertured guiding lugs 14, to which are secured guide tubes 15. The lugs la and tubes 15 are slidably en gaged with guide rods 16 secured at their lower ends to the platform 90 and suitably depending from the cross head 11 is a cable guiding roller 17 with which is engaged a mold elevating cable 18, one end of which is suitably secured to one side of the main frame as shown at 19, while the other end passes over a guide pulley 20 on one end of the cross bars 3 and is secured by a link 21 to a mold operating lever 22, the lower end of which is pivotally connected with one of the sills d of the main frame. By thus construct-ing and arranging the mold l3 and its operating mechanism, it will be seen that when the lever 22 is moved the cable 18 through the cross head 11 and rods 12 will lift the mold up off of the pallet and from the block molded therein. In thus being lifted the mold is guided and held steady by the engagement of the lugs 1 1 and sleeves 15 with the guide rods 16 hereinbefore described.

Suitably secured to the side bars of the frame is a pair of rails 28 forming a track comprising a rod 27 having on its lower end 7 a head 28 which is engaged with the mold as shown. The upper end of the rod 27 is connected to an eccentric strap 29 which is engaged with an eccentric 30 fixed on an o )erating shaft 31 journaled in suitable bearings on cross bars 32 connecting the upper portions of the side bars 1 of the frame. Gn one end of the shaft 31 is fixedly secured a crank arm 33 which is connected by apitman rod 3% with a hand lever 35 one end of which is pivotally secured to one of the side bars 1 whereby when the plunger rod 27 is in operative position with the head 28 thereon in engagement with the material in the mold, said lever is depressed, thus forcing the plunger head down into the mold and firmly packing the contents thereof. After the contents of the mold has thus been packed and while the plunger head is still held down by the plunger rod and its operating mechanism, the mold lifting mechanism is operated by the lever 22 and the mold thus pushed up from the pallet and from around the molded block which is held down on the pallet by the plunger head. After the mold has thus been raised or lifted from the block, the plunger operating lever 35 is released thus relieving the pressure of the plunger head on the molded block whereupon the pallet and molded block may be removed from. the machine. After the block is removed another pallet is placed in position on the supporting platform and the mold permitted to descend thereon. After the mold is thus lowered the plunger 27 will be swung out of the way and to the position shown in Fig. 1 of the drawing, where it is held by means of a counter balancing weight 36 which is secured by an arm 37 to the eccentric band 29.

The pallets 10 may have arranged thereon any configuration for forming an impression in the end of the block, said pallets being here shown as having thereon tongues or ribs 38 which form in the lower ends of the block, grooves or recesses to receive cement or other plastic material employed in setting or laying the blocks.

ll hile the machine is herein shown and described as being particularly designed for molding segmental blocks, it is obvious that molds of any desired form may be employed for molding blocks of the desired shape.

From the foregoing description taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood witln out requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as claimed.

Having thus described my invention, what I claim is:

1. In a block molding machine, a frame, a mold, and a mold lifting mechanism; combined with packing mechanism comprising a plunger head adapted to be engaged with the material in the mold, a revolubly mounted shaft, an eccentric fast thereon, a band encircling the eccentric, a plunger rod having connection with said eccentric band and plunger head, means for oscillating the shaft, an arm projecting from said band, and a weight on the arm counterbalancing said plunger.

2. In a block molding machine, a main supporting frame, a mold supporting and guiding frame secured in said main frame, a mold slidably mounted on said mold supporting frame, a mold lifting mechanism, a packing mechanism comprising a plunger head adapted to be engaged with the material in the mold, a revo-lubly mounted shaft, a plunger rod having an eccentric connection with said shaft and adapted to force said plunger head down and hold the same in the mold while the mold is being lifted by said mold-elevating mechanism, and means to swing said plunger rod and head laterally and to hold the same in an out of the way position while the mold. is being filled.

3. In a block machine, a main supporting frame, a mold supporting and guiding frame secured in said main frame, a mold slidably mounted on said mold supporting frame, a mold elevating mechanism, a mold packing mechanism comprising a plunger head adapted to be engaged with the material in the mold, a plunger rod connected with said head and carrying an eccentric strap, an eccentric within the latter, a hand lever operatively connected with said eccentric, and a counter balancing weight connected with the eccentric strap whereby the latter is turned and held in an out of the way position to permit the mold to be filled.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOSEPH OATHRINER.

VVit-nesses H. F. HOI-ILT, RUDOLPH VVINDT.

tiopiea of this patent may be obtained for five cents each, by addressing the Gommiseioner of Patents. Washington, D. 0. 

